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13 November 2020 Effects of prescribed burning on rodent community ecology in Serengeti National Park
Abeid M. Manyonyi, Sayuni B. Mariki, Laudslaus L. Mnyone, Steven R. Belmain, Loth S. Mulungu
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Abstract

A study on the effects of prescribed burning on rodent community ecology was conducted in Serengeti National Park, Tanzania. The study aimed at generating ecological knowledge about the changes in rodent communities when areas of the park are intentionally burned to regulate grasslands or reduce undergrowth that can lead to uncontrolled forest fires. A completely randomized design (CRD) factorial layout with two treatments (burned and unburned) and two replications was applied. A total of 148 animals comprising six species of rodent and one insectivore were captured over 2,940 trap nights. Among the trapped individuals, 41.9% were adults, 16.1% juveniles and 41.9% sub-adults. Males and females were at parity between treatments. Species abundance was estimated using the minimum number alive (MNA) method for different rodent species and was found to vary with treatment where Mastomys natalensis declined in burned plots whilst Arvicanthis niloticus increased. However, species diversity did not differ across treatments (F1, 10 = 0.15, p = 0.70). Differences in the reproductive condition of female M. natalensis (z = 4.408, df = 15, p < 0.001) and A. niloticus (z = 2.381, df = 15, p = 0.017) were observed between treatments showing that higher numbers of reproductively active females were observed in burned plots in March, whilst in unburned plots more were observed from November to February. Conservation strategies involving periodic habitat burning should, therefore, consider small mammal reproductive periods to ensure that species potentially at risk are not adversely affected and able to rapidly recover from the effects of burning in temporarily lowering food resources and longer term impacts of increased predation caused by reduced cover.

Abeid M. Manyonyi, Sayuni B. Mariki, Laudslaus L. Mnyone, Steven R. Belmain, and Loth S. Mulungu "Effects of prescribed burning on rodent community ecology in Serengeti National Park," Journal of Vertebrate Biology 69(2), 20001.1-13, (13 November 2020). https://doi.org/10.25225/jvb.20001
Received: 4 January 2020; Accepted: 30 August 2020; Published: 13 November 2020
KEYWORDS
age structure
Arvicanthis niloticus
breeding pattern
Mastomys natalensis
population
recruitment
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